2020 ICD-10-CM Diagnosis Code K11.21

Acute sialoadenitis

    2016 2017 2018 2019 2020 Billable/Specific Code
  • K11.21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM K11.21 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K11.21 - other international versions of ICD-10 K11.21 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K11.21. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • acute recurrent sialoadenitis (
    ICD-10-CM Diagnosis Code K11.22

    Acute recurrent sialoadenitis

      2016 2017 2018 2019 2020 Billable/Specific Code
    K11.22
    )
The following code(s) above K11.21 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K11.21:
  • K00-K95
    2020 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
  • K11
    ICD-10-CM Diagnosis Code K11

    Diseases of salivary glands

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Use Additional
    • code to identify:
    • alcohol abuse and dependence (F10.-)
    • exposure to environmental tobacco smoke (Z77.22)
    • exposure to tobacco smoke in the perinatal period (P96.81)
    • history of tobacco dependence (Z87.891)
    • occupational exposure to environmental tobacco smoke (Z57.31)
    • tobacco dependence (F17.-)
    • tobacco use (Z72.0)
    Diseases of salivary glands
  • K11.2
    ICD-10-CM Diagnosis Code K11.2

    Sialoadenitis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Parotitis
    Type 1 Excludes
    Sialoadenitis
ICD-10-CM K11.21 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 011 Tracheostomy for face, mouth & neck diagnoses or laryngectomy with mcc
  • 012 Tracheostomy for face, mouth & neck diagnoses or laryngectomy with cc
  • 013 Tracheostomy for face, mouth & neck diagnoses or laryngectomy without cc/mcc
  • 154 Other ear, nose, mouth and throat diagnoses with mcc
  • 155 Other ear, nose, mouth and throat diagnoses with cc
  • 156 Other ear, nose, mouth and throat diagnoses without cc/mcc

Convert K11.21 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to K11.21:
  • Sialoadenitis (any gland) (periodic) (suppurative) K11.20
    ICD-10-CM Diagnosis Code K11.20

    Sialoadenitis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code

ICD-10-CM Codes Adjacent To K11.21
K09 Cysts of oral region, not elsewhere classified
K09.0 Developmental odontogenic cysts
K09.1 Developmental (nonodontogenic) cysts of oral region
K09.8 Other cysts of oral region, not elsewhere classified
K09.9 Cyst of oral region, unspecified
K11 Diseases of salivary glands
K11.0 Atrophy of salivary gland
K11.1 Hypertrophy of salivary gland
K11.2 Sialoadenitis
K11.20 …… unspecified
K11.21 Acute sialoadenitis
K11.22 Acute recurrent sialoadenitis
K11.23 Chronic sialoadenitis
K11.3 Abscess of salivary gland
K11.4 Fistula of salivary gland
K11.5 Sialolithiasis
K11.6 Mucocele of salivary gland
K11.7 Disturbances of salivary secretion
K11.8 Other diseases of salivary glands
K11.9 Disease of salivary gland, unspecified
K12 Stomatitis and related lesions

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.